CN205722940U - The Through ground wire of tension stress change can be monitored - Google Patents
The Through ground wire of tension stress change can be monitored Download PDFInfo
- Publication number
- CN205722940U CN205722940U CN201620576889.2U CN201620576889U CN205722940U CN 205722940 U CN205722940 U CN 205722940U CN 201620576889 U CN201620576889 U CN 201620576889U CN 205722940 U CN205722940 U CN 205722940U
- Authority
- CN
- China
- Prior art keywords
- ground wire
- core
- cable
- wire
- tension stress
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses a kind of Through ground wire that can monitor tension stress change, including cable core and the metallic jacket that is arranged at outside cable core, described cable core is formed by some metallic conductors are the most stranded, is provided with piezoelectric transducer in cable core.Described piezoelectric transducer is positioned at the center of cable core, and metallic conductor is stranded in the periphery of this piezoelectric transducer.Described piezoelectric transducer includes cable wire core, is adhesive with piezoelectric membrane on cable wire core, is coated with sheath and screen layer successively, is extruded with outer jacket on this screen layer outside described piezoelectric membrane.Described piezoelectric membrane is gluing on cable wire core by adhesive layer.Described piezoelectric membrane is arranged along cable wire core length direction interval.This utility model energy accurate measurements ground wire tension stress changes, effectively prevention ground wire fracture damage, achieve from ground wire post-rift report to the police to repair to take precautions against the conversion of early warning, be particularly well-suited to have in the railway combined shared wiring system of high reliability, high security requirement.
Description
Technical field
This utility model relates to the earth cable used in a kind of railway combined earthed system, and particularly relating to one can supervise
Survey the Through ground wire of tension stress change.
Background technology
Railway run-through ground line system is to ensure railway operation safety, it is achieved train is at a high speed, heavily loaded, signal of communication technology is digital
Changing intelligentized key facility, railway run-through ground line is then one of key component of railway run-through ground line system.Railway run-through ground
Line is by ensureing full line electrical equipment and the same current potential of wiring, the injustice that the potential difference between eliminating because of distinct device causes
Weighing apparatus electric current, meets the requirement of giant ground system long-term good earth resistance value, it is achieved that to personnel and effective guarantor of equipment
Protect.
Under artificial and irresistible External Force Acting, railway run-through ground line is likely to cause fracture damage, if not
Can find in time and putting maintenance into practice can affect accurately controlling and transmission information signal control of signal transmission system technical parameter
Reliability, leaves hidden danger to the safety of high-speed railway.Find that Through ground wire Broken condition and running status are to ensure that railway in time
Basis that system is reliable, safe and guarantee, especially with railway ballastless track, signaling system equipment complex ground connection, " four electricity "
Integrated extensive application, the safety of earthed system is more and more important, and the effect of Through ground wire seems more crucial.
Solve at present Through ground wire break the most frequently used technological means be the copper of Through ground wire cut with scissors line adds one or
The signal alarm line of more than one.The national patent " high safety shield Through ground wire " applied for such as the applicant, the patent No.:
201120244011.6；Holding wire is reported to the police in the conduction state under normal circumstances, and display is normal, when Through ground wire is at External Force Acting
After lower fracture, its holding wire also can be in open-circuit condition, and warning device sends break alarm signal, but this alarming line is often only capable of
Whether reflection Through ground wire ruptures, it is impossible to determine breakpoint location.Chinese patent " a kind of remotely monitoring break alarm Through ground wire ",
The patent No.: the alarm unit in 201220385635.4 is then to be formed, when Through ground wire is by external force by two insulated single wires are stranded
During effect fracture, the mutual capacitance between two insulated single wires in this alarm unit changes, and monitoring device can be according to change
The mutual capacitance value changed automatically calculates breakpoint location and reports to the police, and facilitates the quickly location of maintainer and quickly repairs,
Whether this alarm unit with two insulated single wires can be distinguished and break, it is also possible to determine the position of broken string.But whether
The alarming line of single covered wire or two covered wires all can only make warning reflection after Through ground wire ruptures, and can not monitor and pass through
The real time status of logical ground wire, especially can not be monitored and controlled the change causing Through ground wire major cause of failure pulling force size
Change state.
Utility model content
For the above-mentioned deficiency existing for prior art, technical problem to be solved in the utility model is to provide a kind of energy
Accurate measurements ground wire tension stress changes, effectively the Through ground wire that can monitor tension stress change of prevention ground wire fracture damage.
In order to solve above-mentioned technical problem, a kind of Through ground wire that can monitor tension stress change of the present utility model, bag
Including cable core and the metallic jacket being arranged at outside cable core, described cable core is formed, at cable core by some metallic conductors are the most stranded
In be provided with piezoelectric transducer.
In said structure, owing to being provided with piezoelectric transducer in cable core, when Through ground wire is by accidental mechanical effect
Or during the change of ground wire axial tensile force, the mechanical signal of these STRESS VARIATION can be converted to the signal of telecommunication and transmit extremely by piezoelectric transducer
Monitoring device also sends early warning signal, allows one to intervene in time and process, it is to avoid the faults such as broken string occur, thus become traditional
Break treat with is for prevent in advance afterwards, ensure that Through ground wire is in safe and reliable working condition all the time, effectively ensures that
Train operation.
Preferred implementation of the present utility model, described piezoelectric transducer is positioned at the center of cable core, and metallic conductor twists
Periphery together in this piezoelectric transducer.Described piezoelectric transducer includes cable wire core, is adhesive with piezoelectric membrane on cable wire core, in institute
State and outside piezoelectric membrane, be coated with sheath and screen layer successively, this screen layer is extruded with outer jacket.Employing piezoelectric membrane is made
Through ground wire bending, stretching and the change of compression stress more can be reflected in time for piezoelectric transducer, accurate perception Through ground wire
ABNORMAL STRESS changes.Piezoelectric membrane is the most frivolous, soft, sensitivity is fabulous, and has the strongest mechanical tenacity, directly attaches
Through ground wire and the bending of cable wire core and wiring will not be impacted again by steel wire.Cable wire core is positioned at cable with piezoelectric transducer
The center of core, both greatly strengthen the tension mechanical strength of Through ground wire, compensate for copper cable core mechanical strength relatively
Weak deficiency, makes Through ground wire have more preferable mechanical performance, can make again the Through ground wire more adduction of the stress on whole cross section
Reason.
Further embodiment of the present utility model, described piezoelectric membrane is gluing on cable wire core by adhesive layer.Described
Piezoelectric membrane is arranged along cable wire core length direction interval.When cable wire core is stretched compression or bending with Through ground wire, adhere to
Piezoelectric membrane on cable wire core is produced corresponding electric charge by the effect of power, makes metataxis be converted to the signal of telecommunication and is transferred to monitoring and sets
The raw indication signal of preparation.The most spaced piezoelectric membrane can reflect the tension variation of different section Through ground wire,
And send expection signal for different sections.
Preferred implementation of the present utility model, described cable wire core is individual wire or steel tendon；Described screen layer is plating
Stannum silk braid.Use steel wire or steel tendon that Through ground wire can be made both to have had fabulous tensile property, there is again good flexibility.
The shielding construction of tincopper fuse wire braided armor has the two-fold advantage that shield effectiveness is good, flexible.Screen layer outside piezoelectric membrane, energy
It is prevented effectively from the external electromagnetic field interference to piezoelectric signal, it is ensured that the acquisition accurately and reliably of piezoelectric signal.
This utility model preferred implementation, described metallic jacket is copper alloy sheath, wraps on this metallic jacket
It is covered with corrosion resistant layer.Copper alloy sheath not only has good electric conductivity, and has preferable rotproofness and Local Adaptation.?
Metallic jacket is provided with corrosion resistant layer, can be effectively improved Through ground wire adaptability in various soil environments, has preferably
Corrosion resistant, environmental-protecting performance.
Accompanying drawing explanation
The Through ground wire that below in conjunction with the accompanying drawings this utility model can be monitored with detailed description of the invention tension stress change is made
Further illustrate.
Fig. 1 is the cross section structure that this utility model can monitor a kind of detailed description of the invention of Through ground wire of tension stress change
Schematic diagram；
Fig. 2 is the piezoelectric transducer structure for amplifying schematic diagram in Fig. 1 illustrated embodiment；
Fig. 3 is the cross section knot that this utility model can monitor the Through ground wire another kind detailed description of the invention of tension stress change
Structure schematic diagram.
In figure, 1 cable core, 2 metallic conductors, 3 piezoelectric transducers, 31 cable wire cores, 32 adhesive layers, 33 piezoelectricity
Thin film, 34 sheaths, 35 screen layers, 36 outer jackets, 4 metallic jackets, 5 corrosion resistant layer.
Detailed description of the invention
The Through ground wire that can monitor tension stress change as shown in Figure 1, this Through ground wire includes 18 copper metals
Conductor 2, metallic conductor 2 is twisted by layer or concentric stranding is in forming cable core 1 together, is enclosed with metallic jacket 4 on cable core 1,
This metallic jacket 4 is copper alloy sheath, and the material of copper alloy sheath is ormolu.Metallic jacket 4 is also wrapped on
Corrosion resistant layer 5, the material of this corrosion resistant layer 5 is conductive plastics.Being provided with piezoelectric transducer 3 in cable core 1, piezoelectric transducer 3 is positioned at
The center of cable core 1, metallic conductor 2 is the most stranded in the periphery of piezoelectric transducer 4.
As in figure 2 it is shown, the piezoelectric transducer 3 in cable core 1 includes cable wire core 31, by adhesive layer 32 on cable wire core 31
It is pasted with piezoelectric membrane 33, is i.e. coated between piezoelectric membrane 33 and the cable wire core 31 of cable wire core 31 periphery and is provided with adhesive layer 32.
Piezoelectric membrane 33 is made up of copolymer polyvinylidene fluoride (PVDF) material, and it has the highest piezoelectric property and splendid soft
Pliable.Cable wire core 31 both individual wire, it is also possible to being that some steel wires are stranded forms.Piezoelectric membrane 33 is along the length of cable wire core
Direction has been positioned apart from multi-disc piezoelectric membrane, with the stretching of the different ground wire section of monitoring, compress, the mechanical stress such as bending.Respectively
Sheet piezoelectric membrane all electrically connects with monitoring device, is externally provided with inner sheath 34 at piezoelectric membrane 33.Inner sheath 34 is provided with shielding
Layer 35, this screen layer 35 is formed by tinned copper wire braiding, is coated with outer jacket 36 on screen layer 35.Inner sheath 34 and outer jacket
36 all with polyethylene as material.
In Fig. 3 illustrated embodiment except the radical of metallic conductor 2 of cable core 1 and corrosion resistant layer unlike the embodiments above in addition to,
Other are the most identical.Stranded in the periphery of piezoelectric transducer 3 in this embodiment have 6 metallic conductors 2, and metallic conductor 2 also with copper is
Material.Be coated with the copper metallic jacket of alloy 5 in the periphery of cable core 1, on metallic jacket 5, be coated with conductivity ceramics and
The corrosion resistant layer 6 formed.
Above the specific embodiment of this utility model patent is illustrated and illustrates, but this utility model patent is not only
It is limited to above example, all equivalent transformations made according to this utility model patent, all should be in this utility model scope of patent protection
Within.
Claims (9)
1. can monitor a Through ground wire for tension stress change, protect including cable core (1) and being arranged at outside cable core (1) metal outward
Set (5), it is characterised in that: described cable core (1) is formed by some metallic conductors (2) are the most stranded, is provided with in cable core (1)
Piezoelectric transducer (3).
The Through ground wire that can monitor tension stress change the most according to claim 1, it is characterised in that: described piezoelectric sensing
Device (3) is positioned at the center of cable core (1), and metallic conductor (2) is stranded in the periphery of this piezoelectric transducer (3).
The Through ground wire that can monitor tension stress change the most according to claim 1 and 2, it is characterised in that: described piezoelectricity
Sensor (3) includes cable wire core (31), is adhesive with piezoelectric membrane (33) on cable wire core (31), at described piezoelectric membrane (33) outward
It is coated with sheath (34) and screen layer (35) successively, this screen layer (35) is extruded with outer jacket (36).
The Through ground wire that can monitor tension stress change the most according to claim 3, it is characterised in that: described piezoelectric membrane
(33) gluing on cable wire core (31) by adhesive layer (32).
The Through ground wire that can monitor tension stress change the most according to claim 3, it is characterised in that: described piezoelectric membrane
(33) arrange along cable wire core (31) length direction interval.
The Through ground wire that can monitor tension stress change the most according to claim 3, it is characterised in that: described cable wire core
(31) it is individual wire or steel tendon；Described screen layer (35) is tin plated wire braid.
The Through ground wire that can monitor tension stress change the most according to claim 1, it is characterised in that: protect outside described metal
Set (5) is copper alloy sheath, is coated with corrosion resistant layer (6) on this metallic jacket (5).
The Through ground wire that can monitor tension stress change the most according to claim 7, it is characterised in that: described corrosion resistant layer
(6) it is conducting plastic layer.
The Through ground wire that can monitor tension stress change the most according to claim 7, it is characterised in that: described corrosion resistant layer
(6) it is conductivity ceramics sprayed coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620576889.2U CN205722940U (en) | 2016-06-14 | 2016-06-14 | The Through ground wire of tension stress change can be monitored |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620576889.2U CN205722940U (en) | 2016-06-14 | 2016-06-14 | The Through ground wire of tension stress change can be monitored |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205722940U true CN205722940U (en) | 2016-11-23 |
Family
ID=57305333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620576889.2U Active CN205722940U (en) | 2016-06-14 | 2016-06-14 | The Through ground wire of tension stress change can be monitored |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205722940U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770680A (en) * | 2017-03-06 | 2017-05-31 | 柳州欧维姆机械股份有限公司 | A kind of bridge cable fracture of wire monitors sensor |
-
2016
- 2016-06-14 CN CN201620576889.2U patent/CN205722940U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770680A (en) * | 2017-03-06 | 2017-05-31 | 柳州欧维姆机械股份有限公司 | A kind of bridge cable fracture of wire monitors sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8796547B2 (en) | Elastomeric conductor and shield fault detection | |
| CN105895244B (en) | Remote monitoring early warning Through ground wire | |
| CN201788759U (en) | Intelligent type overhead transmission conductor and monitoring system thereof | |
| CN107154285A (en) | The manufacture method and cable of a kind of high electric energy transmission dress cable in stock | |
| CN217933270U (en) | Cable with rubber breakage positioning and alarming functions | |
| CN103928189B (en) | High-power railway communication signal control photo-electricity composite cable | |
| CN205845566U (en) | Remotely monitoring and early warning Through ground wire | |
| CN205722940U (en) | The Through ground wire of tension stress change can be monitored | |
| CN201213075Y (en) | Electric cable having real-time temperature measuring function | |
| CN203850069U (en) | Sheathed cable core deficient point marking device | |
| CN109148028A (en) | A kind of intelligent cable | |
| CN209183310U (en) | A kind of fireproof power cable of all fronts channel Temperature Measuring alarm | |
| CN209232442U (en) | A kind of insulated wire cores and power distribution network intelligent cable | |
| CN207800228U (en) | A kind of optical fiber temperature-measurement fault pre-alarming composite power cable | |
| CN106057351A (en) | Temperature measurement soft fire resistant transmission signal cable | |
| CN202487277U (en) | Fully water-blocking intelligent ultra-high voltage power cable | |
| CN211350192U (en) | Intelligent cable of embedded fiber grating array | |
| CN213092895U (en) | 27.5kV intelligent temperature-sensing railway power supply cable | |
| CN201732192U (en) | Armor sensing optical cable | |
| CN104464150B (en) | Cable theft alarm system | |
| CN203673866U (en) | Power cable capable of monitoring operating temperature | |
| CN204288411U (en) | The stolen warning device of a kind of cable | |
| CN113161067A (en) | Intelligent mineral insulated cable | |
| CN208596563U (en) | A kind of cable with monitoring line | |
| CN210295953U (en) | Flat submersible pump cable with temperature measurement and shielding functions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |